6/13/2012 Temperature and Release Summary for Shasta and Trinity - May 2012

(Updated twice a week November through April)

Sacramento River Water Temperatures in Degrees F

Day Collected from CDEC (California Data Exchange Center) in CFS

Control

TCD SHD minus Point Shasta Spring Crk 

Wt. TCD 4/16 to 5/31 Generation Powerplant 

Avg. (Diff) Shd Spp Kwk Bsf Jlf Bnd Rdb Lws Ccr Igo El 815 Release 

Apr 49.8 49.1 48.0 50.0 53.6 54.4 54.8 55.7 50.0 51.3 50.2 2,891 850 

May

1 50.2 0.0 50.2 48.5 51.9 55.8 57.2 57.6 59.1 49.4 53.6 51.4 4,657 819 

2 51.9 (1.8) 50.1 48.8 51.7 54.8 56.2 56.8 58.4 48.4 52.6 50.2 4,772 475 3 51.0 (1.3) 49.7 48.6 51.6 54.1 55.5 56.1 57.0 48.0 52.5 50.1 4,714 933 4 51.3 (1.3) 50.0 48.8 51.3 54.8 55.6 55.9 57.1 47.8 52.7 51.4 5,392 854 5 53.0 (1.8) 51.2 50.7 51.2 54.4 55.6 56.1 57.5 47.8 52.4 51.0 5,933 68 6 53.5 (1.9) ? 51.6 49.8 52.1 55.0 56.1 56.5 57.7 47.6 53.2 51.6 6,036 129 7 52.1 (1.1) ? 51.0 51.3 53.4 56.5 57.7 58.0 59.0 47.3 54.6 52.0 7,203 63 8 50.6 (1.1) 49.5 51.6 53.1 57.0 58.4 58.9 60.2 47.4 54.7 52.5 7,646 45 9 50.2 (1.2) 49.0 50.5 51.5 56.0 57.8 58.4 60.3 47.5 53.2 52.7 8,071 86 

10 51.4 (1.4) 50.0 50.2 50.7 54.4 56.0 56.7 58.4 47.5 52.1 52.2 8,374 83 11 51.2 (1.1) 50.1 50.3 51.5 54.3 55.7 56.1 57.5 47.7 52.5 52.3 9,107 94 12 50.7 (1.3) 49.4 50.4 51.6 54.8 56.4 56.9 58.1 47.5 52.9 52.5 9,169 74 13 50.7 (1.4) 49.3 50.6 51.0 54.6 56.4 57.0 58.5 47.6 52.3 52.7 8,647 66 14 50.4 (1.2) 49.2 50.5 51.0 54.2 56.0 56.5 58.0 47.8 52.1 52.9 8,867 91 15 50.7 (1.2) 49.5 50.3 50.7 54.3 55.9 56.4 57.7 48.1 52.1 52.8 8,865 108 16 50.6 (1.2) 49.4 50.6 50.9 54.5 56.4 57.0 58.5 48.0 52.2 53.4 8,797 96 17 50.8 (1.3) 49.5 50.4 50.6 54.3 56.2 56.9 58.5 48.0 52.0 52.4 9,828 89 18 51.1 (1.4) 49.7 50.5 50.6 53.4 54.9 55.4 56.8 47.6 51.7 52.2 9,969 123 19 50.8 (1.4) 49.4 50.5 51.0 54.1 55.5 55.9 56.9 47.8 52.3 52.5 9,748 117 20 50.8 (1.4) 49.4 50.3 50.9 54.4 56.0 56.5 57.9 48.0 52.3 53.0 9,863 144 

21 50 7 49 5 50 5 50 9 54 2 56 0 56 6 58 2 48 1 52 1 52 1 9 380 108 

Mean Daily Relea

21 50.7 (1.2) 49.5 50.5 50.9 54.2 56.0 56.6 58.2 48.1 52.1 52.1 9,380 108 

22 50.6 (1.2) 49.4 50.6 50.6 53.9 55.5 56.1 57.5 48.2 52.0 51.7 9,441 102 23 50.7 (1.3) 49.4 50.4 50.6 53.7 55.1 55.6 57.0 48.9 52.0 51.6 9,613 117 24 51.0 (1.5) 49.5 50.8 50.8 53.7 55.1 55.5 56.7 48.3 52.1 51.5 10,235 76 25 51.2 (1.6) 49.6 50.5 50.8 52.7 53.8 54.3 55.6 48.3 51.5 50.8 9,777 127 26 51.1 (1.6) 49.5 51.0 50.8 52.9 54.1 54.4 55.1 47.4 51.7 51.6 9,269 80 27 51.0 (1.6) 49.4 51.2 50.9 53.8 55.1 55.5 56.5 47.4 52.2 52.5 9,186 80 28 51.2 (1.6) 49.6 51.3 51.1 54.3 55.7 56.2 57.3 47.8 52.5 52.6 8,929 80 29 50.3 (1.2) 49.1 51.1 51.2 54.5 56.0 56.5 57.9 48.3 52.6 52.7 8,873 200 30 49.9 (1.3) 48.6 52.3 50.9 54.8 56.4 57.0 58.5 48.4 52.7 53.2 8,785 46 31 49.9 (1.2) 48.7 50.9 50.3 54.5 56.3 57.0 59.0 48.5 52.1 53.9 8,995 86 

Avg 51.0 49.7 50.4 51.2 54.5 56.0 56.5 57.8 47.9 52.5 52.1 8,327 183 Tot cfs 258,141 5,659 Tot af 512,023 11,225 

# = Station out of service ^ - estimated (7 hours or less available) ? = Avg. includes estimated data! = 17 hours or less of readings & = 18 to 23 hours of reading ND = No hourly readings or incorrect 

Control Point: Jelly's Ferry 6/1/2011 to 4/15/2012; Balls Ferry 4/16/2012 to 5/31/2012NOTE: On 7/19/2011 the probe for SHD was extended farther out into the river so at low flows

 it should no longer be exposed to the air. 8/2/2011 the extended pipe floated away.  Some hourly readings for SHD are questionable again and are being estimated.On 4/23/2012 the pipe extension was comleted. On 4/24/2012 at 0900 a newly calibrated probe was installed.

V:\~WATER\_res_ops\Tempmodel\~sactemp\2012TempFiles\2012 Monthly Summaries\[05_2012 Monthly Summary.xls]Sac Riv Temps